Diestock



T. PETERS-EN Nov. 18, 1930.

DI ESTOCK Filed April 14, 1928 V 1 Y B Patented Nov. 18, 1930 UNITED.STATES THORVALD PETERSEN, 0F ERIE, irnnnsxnvanrnfhssielvonifTo"mandates-.-

me COMPANY, 01* ERIE, PENNSYLVANIA, agooaron-ar ouforarnmvsynyxmn VmEs'rooxf f I 1' Application filed April 14,

This invention is designed to improve die stocks which are ratchetdriven. With such stocks it is desirable to provide driving mechanismwhich may be readily attached to Various carriers and the invention isdirected to the improvement of this feature. Deta ls of the inventionwill appear from the specification and claims.

A preferred embodiment of the invent on is illustrated in theaccompanying drawings as follows p 1 shows a front elevation, partly nsection, of a die stock on the line 11 in Fig. 2. t r

Fig. 2 a side elevation, partly in section, on the line 22 in Fig.- 1.

Fig. 3 a section on the line 11 showing a driving pawl in retractedposition.

Fig. 4 an elevation of one of the pawl sockets. V

Fig. 5 a detail view of the locking pawl structure, this part of thestructure belng shown in section on the line 22 in Fig. 1 and with thelocking pawl retracted.

1 marks the carrier, and 2 the die or chaser which may be secured in thecarrier in any desired manner, 3 a shank extending from the carrier, 4ratchet teeth arranged on the shank, and 5 a groove in the shank, theratchet teeth being preferably arranged in the bottom of the groove. Adriving ring 6 is journaled on the shank. It is provided with a handlesocket 7 1n which is secured the handle 8.

A locking pawl socket 10 is arranged in the ring in alinement with andin continuation of the handle socket. A locking pawl 11 operates in thesocket 10. It is yieldingly urged'forward by a spring 12, the springbeing arranged between the pawl and a plate 13, the plate being expandedinto a seat 14 in the walls of the socket 10. The pawl 11 has a crossgroove 15 and a pin 16,extends across this groove. An operating pin 17is slidingly mounted in an opening 18 extending crosswise of the axis ofthe socket 10. This pin normally extends beyond the walls of the socket10 and has a cam notch 19, the cam of the notch being adaptedtoengagethe pin 1923;;smamg paoe.

16 toretract locking pawl111 when thepin I I7 is forced: inwardly towardthe wall ofthe socket: A, shoulder 20. locks theipin 17 in place when itisin normal position. This makes a: very simple, yet veryefiectivemechanism for locking the ring on the shank.

Driving pawl sockets 21 are arranged .on. v

the ring. Preferably there are'two of these sockets, each containing apawl mechanism,-

the pawl mechanism being-so arrangedto work alternately on the teeth andthusreducethe-slack of the pawl. A pawl'23 is" mounted in-th'e openingof the socket-21 and hasa-shank 24 extending outwardly through:

a plug '25 at the 'outerend of the socket. A

and pawl 23 and a spring 26 is' -arranged between this shoulder and theplugandyieldingly forces the pawl into operating engagement withrelation to the ratchet teeth. The outer end of the plug :is providedwith a cross slot 28 and a pin 29 extends crosswise through the shank 24and normally operates in the slot 28. This pin is pointed and indicatesthe driving direction of the pawl. By withdrawing the pin from the slot28 the pawl may be reversed, or by leaving the pin crosswise of the slotthe pawl may be locked in retracted position; I g

In operation the driving pawls are lockedv in their outer position, thelocking pawl retracted and the ring may be removed from one shank andplaced upon another. Thelocking pawl released locks the shank in thedriving ring and the driving pawls may be set, either forward or back,for either direction of operation. I

What I claim as new is v 1. In a die stock, the'combination' of a o i atshoulder 27 is formed between the shank '24 pawl socket operating ontheratchet, teeth a locking pawl socket in'the ring; and a locking pawl insaid locking socket operating 1 in the groove. 7

2. In adie stock, the combination of a car-- rier having a shank, saidshank. having a,

ring on the shank; a driving pawl socketin the ring; a driving pawl inthe driving pawl socket operating on the ratchet teeth; a locking pawlsocket in the ring; a locking pawl in said locking socket operating inthe groove; and. a cross pin mountedon the ring and acting on thelocking pawl to retract it.

.ring'on the shank; a driving pawl socket in the ring; a driving pawl inthe driving pawl socket operating on the ratchet teeth I .a locking pawlsocket in the ring; a locking 3. die'stock, the combination of a carrierhav ng ashank, said shank havlnga locking groove and ratchet 'te'eth;adriving pawl in said locking socket operating in the groove said lockingpawl having a slot therethrongh; a pin bridgingthe s1ot;vand across pinhavingacam slot therein acting on said pawl pin to retract it. 1 a

4. In a die stock,' the combination of a carrier having a shank, saidshank having a locking groove and ratchet teeth; a ring on the shank; ahandle socket on the ring; a locking pawlsocket in al'inement with thehandle socket ;'a locking pawl in the locking pawl socket; means foractuatingthe locking pawl; and adriving pawl'mounted in the a ring andoperating on the ratchet teeth.

' my hand.

In testimony whereof I, have hereunto set THoR-VALD PETERSEN.

